Free tools
Small tools for people shipping AI built apps
No signup, no email, nothing stored. Each one answers a question that decides whether your app survives contact with real users.
AI Cost Calculator
What your chatbot or AI feature actually costs per user per month, and whether your price covers it.
Open the toolEnv Var Exposure Checker
Paste your .env. See which keys ship inside the JavaScript every visitor downloads.
Open the toolFree Tier Threshold Finder
Pick your stack and see which free tier runs out first, and what it costs when it flips.
Open the toolCompetitor Analysis Tool
Read what a competitor’s own customers complain about, and whether each gap is a feature problem or a positioning one.
Open the toolStartup Cost Calculator
What it actually costs to start an online business, line by line, and how much of that list is free until you have customers.
Open the tool
Already shipped something?
Paste your URL and see what a stranger's browser can already read from your app. Free, and it takes seconds.
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